Microstructure and magnetic properties of electroless Co-P thin films grown on an aluminum base disk substrate

The microstructure and magnetic properties of electroless Co-P films (∼100 to 1000 Å) deposited on an aluminum base substrate are examined. The squareness and coercivity characterizing the magnetic hysteresis are found to correlate with the size and nature of the microcrystallites making up the film. It is argued that this correlation is due to coupling between the microcrystallites.